SLVS490K December   2003  – June 2024

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Description (continued)
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 Recommended Operating Conditions
    3. 6.3 Thermal Information
    4. 6.4 Electrical Characteristics
    5. 6.5 Typical Characteristics (TPS2061, TPS2062, TPS2065, and TPS2066)
    6. 6.6 Typical Characteristics (TPS2063 & TPS2067)
  8. 7 Parameter Measurement Information
  9. 8 Detailed Description
    1. 8.1  Functional Block Diagram
    2. 8.2  Power Switch
    3. 8.3  Charge Pump
    4. 8.4  Driver
    5. 8.5  Enable ( ENx or ENx)
    6. 8.6  Current Sense
    7. 8.7  Overcurrent
      1. 8.7.1 Overcurrent Conditions (TPS2063 and TPS2067)
      2. 8.7.2 Overcurrent Conditions (TPS2061, TPS2062, TPS2065, and TPS2066)
    8. 8.8  Overcurrent ( OCx)
    9. 8.9  Thermal Sense
    10. 8.10 Undervoltage Lockout
  10. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1  Power-supply Considerations
      2. 9.1.2  OC Response
      3. 9.1.3  Power Dissipation and Junction Temperature
      4. 9.1.4  Thermal Protection
      5. 9.1.5  Undervoltage Lockout (UVLO)
      6. 9.1.6  Universal Serial Bus (USB) Applications
      7. 9.1.7  Host/Self-Powered and Bus-powered Hubs
      8. 9.1.8  Low-power Bus-powered and High-Power Bus-Powered Functions
      9. 9.1.9  USB Power-distribution Requirements
      10. 9.1.10 Generic Hot-Plug Applications
  11. 10Device and Documentation Support
    1. 10.1 Device Support
    2. 10.2 Documentation Support
    3. 10.3 Receiving Notification of Documentation Updates
    4. 10.4 Support Resources
    5. 10.5 Trademarks
    6. 10.6 Electrostatic Discharge Caution
    7. 10.7 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

9.1.8 Low-power Bus-powered and High-Power Bus-Powered Functions

Both low-power and high-power bus-powered functions obtain all power from upstream ports; low-power functions always draw less than 100 mA; high-power functions must draw less than 100 mA at power up and can draw up to 500 mA after enumeration. If the load of the function is more than the parallel combination of 44 Ω and 10 μF at power up, the device must implement inrush current limiting (see Figure 9-4). With TPS206x, the internal functions can draw more than 500 mA, which fits the needs of some applications such as motor driving circuits.

TPS2061 TPS2062 TPS2063 TPS2065 TPS2066 TPS2067 High-Power Bus-Powered FunctionFigure 9-4 High-Power Bus-Powered Function